EPSRC Reference: 
EP/I019073/1 
Title: 
Unstable Adams Operations on plocal compact groups 
Principal Investigator: 
Levi, Professor R 
Other Investigators: 

Researcher CoInvestigators: 

Project Partners: 

Department: 
Mathematical Sciences 
Organisation: 
University of Aberdeen 
Scheme: 
Standard Research 
Starts: 
21 February 2011 
Ends: 
20 June 2011 
Value (£): 
24,129

EPSRC Research Topic Classifications: 

EPSRC Industrial Sector Classifications: 
No relevance to Underpinning Sectors 


Related Grants: 

Panel History: 

Summary on Grant Application Form 
The object under investigation in this project are the so called plocal compact groups, and more particularly a family of self maps of these objects called unstable Adams operations. In algebraic topology one generally attempts to find algebraic models for the study of topological spaces. plocal compact groups are an algebraic model for the homotopy theoretic behaviour of spaces associated with compact Lie groups, or more precisely, their classifying spaces modified as to isolate the pprimary information encoded in these spaces for a single prime number p, by a process called pcompletion. This concept, due to the work of the PI with Broto and Oliver, encapsulates precisely what distinguishes the class of pcompleted classifying spaces of compact Lie groups and the likes of them (e.g. the homotopy theoretic analog: pcompact groups) from general spaces. It connects the homotopy theory of these spaces to the pprimary algebraic information which gives rise to it, and enables a twoway systematic study of phenomena. If G is a compact Lie group then any endomorphism of G induces a self map of its pcompleted classifying space. But if G is infinite, then there is an additional important class of self maps called unstable Adams operations defined on the classifying space. These maps play a central role in the homotopy theory of classifying spaces of compact Lie groups, and more generally pcompact groups. The 1992 theorems due to Jackowski, McClure and Oliver which claims that for connected compact Lie groups these maps are determined up to homotopy by their effect on cohomology, and that for simple compact connected Lie groups these maps are the only self equivalences of the respective classifying space not induced by homomorphism occupy a large paper in two parts in the Annals of Mathematics. Unstable Adams operations for plocal compact groups are the subject of two recent PhD theses. Junod (2009) showed that under some restrictions, any plocal compact group admits unstable Adams operations, while Gonzalez analysed these operations and was able to show that in some cases their behaviour is very similar to what one would expect by analogy to compact Lie and pcompact groups. This project aims to extend the works of Junod and Gonzalez and deal in a comprehensive way with the construction of the operations, study when (i.e., for what degree) they exist, if they exist whether they are unique, their homotopy fixed point, and their relation to the so called plocal finite groups. In doing so we will be able to tie up the theory with several other works in the subject, and in particular to deduce a number of important results, such as the so called Stable Elements Theorem  the statement that the mod p cohomology of classifying space of a plocal compact group can be computed from algebraic information which defines the object by means of a closed formula.

Key Findings 
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk

Potential use in nonacademic contexts 
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk

Impacts 
Description 
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk 
Summary 

Date Materialised 


Sectors submitted by the Researcher 
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk

Project URL: 

Further Information: 

Organisation Website: 
http://www.abdn.ac.uk 